Stump-extracting machinery.



I F. L. KENNEY. STUMP EXTRACTING MACHINERY.

APPLICATION FILED N18. 1918.

Patented Jan. 21, 1919.

3 SHEETSSHEET I.

INVENTOR FRANK L. Mammy 2 ATTORNEY i F. L. KENNEY.

STUMP EXTRACTING MACHINERY.

APPLICATION FILED MN. 18. 1918.

Patented Jan. 21,1919.

3 SHEETS-SHEET 2 INVENTOR FRANK L. KENNEY F. L. KENNEY. STUMP EXTRACUNG MACHINERY. APPLICATION man JAN. I8, 1918.

1,291,918. Patented Jan. 21, 1919.

3 SHEETS-SHEET 3. G 45 (D 43 INVENTOR FRANK L. MENNEY FIG.

.E'RANK L. KENNEY, OF PORTLAND, OREGON, ASSIGNOR OF ONE-HALF TO FRANK A.

SWEENEY AND ONE-HALF TO FRANK E. KENNEY, BOTH OF PORTLAND, OREGON.

STUMP-EXTRACTING MACHINERY.

Application filed January 18, 1918.

To all whom it may concern:

Be it known that I, FRANK L. KENNEY, a itizen of'the United States, residing at Portland, in the county of Multnomah and State of Oregon have invented a new and useful Improvement in Stump-Extractmg i\lachinery, of which the following is a specification.

This invention relates to improvements in stump extracting machinery, and the object of this improvement is toprovide strong and simple hydraulic mechanism that may be mounted on a tractor frame and that may be utilized both for pulling and splitting stumps.

A further object is to provide anchoring mechanism for the machine that is connected with the cylinder heads. so that the pressure of fluid against the cylinder heads will be substantially balanced by the tension of the anchoring mechanism.

The invention consists in the novel con struction of a hydraulic device for developing power. and in the adaptation and combination of such device with'a tractor frame and with means for anchoring the same, as will'be more clearly hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a view in side elevation of a stump extracting device constructed in accordance with this invention; Fig. 2 is a sectional view of a hydraulic cylinder that is embodied in the device; Fig. 3 is a detached plan view of the hydraulic cylinder; Fig. 4 IS a sectlonal view on broken line l-l of Fig. 3: *ig. 5 trating the hydraulic cylinder in connection with a four way valve and a pump; and Fig. (5 is a fragmentary view in elevation of a detail of the invention.

Referring to the drawings; throughout. which like reference numerals indicate like parts. the. numeral 8 indicates the frame of a stump extractor that is mounted on front' and rear tractor wheels 9 and 10 respectively. whereby it may easily be moved from place to place.

Mounted upon the tractor frame is an engine 11 provided with a carbureter 12 that is connected by a pipe 13 with a fuel tank 14.

The engine. 15 connected by a driving shaft Specification of Letters Patent.

is a conventional view illus- Serial No. 212,522.

15. with a transverse shaft 16 located just in front of the rear wheels of tlie engine.

Each end of the shaft 16 is connected by sprocket. Wheel 17 and chain 18 with a sprocket wheel 19 on a shaft 20 and each end of the shaft 20 is connected by sprocket wheel 21 and chain 22 with another sprocket wheel 23 that is secured to one of the rear tractor wheels 10 whereby the engine may be driven. The driving mechanism just described is of course in duplicate on the two sides of the machine.

The sprocket wheels 17 are loosely mounted on the shaft 16 and are adapted to be engaged by a clutch 17 that is splined onto the shaft 16 when it is desired to move the machine.

Extending lengthwise of the tractor frame midway between the wheels is a hydraulic cylinder 25, see Figs. 2 and 3, within which is disposed a piston :26 that is secured to a piston rod 27 that projects outwardly through a packing gland 28 in the front wall or head 29 of the cylinder.

The rear end of the cylinder 25 is provided with a head 30 similar to the head 29. The heads 29 and 30 are securely bolted to flange. members 31 that are fastened to the ends of the cylnder 25.

The heads 29 and 30 are each provided on opposite sides with extensions 32, as more clearly shown in Fig. 4, that are provided with slots 33 through which tension bars 31 may pass. The tension bars are each provided on the rear end with a hook 35 and on the front end with a ring 36, the hooks and rings being constructed and secured to the bals in such manner that when a pull is exerted on the hooks the rings will be caused to engage with the outer side of the forward head 29, and when a pull is exerted on the rings the hooks will be caused to engage with the outer side of the head 30.

37 is a con'ipcnsating chamber of tubular form that is disposed side by side in parallel relation to the c \'lll)(l0l 25 and is connected at its front end by a pipe 38 and passageway 39 with the interior of the cylinder and at its rear end by a pipe 10 with a four way valve 41.

The valve 41 is connected with the rear end of the cylinder 25 by a pipe 42 and is connected with a pump 43 by a pipe 44 Patented J an. 21, 1919.

passageways to the rear end'of the cylinder "is established through within the cylinder, as shown in w1ll occupy a' portion of the pump through the valve.

through which liquid may be es that are connected with the valve may be successively connected.

The top. of the valve member 4;:6 above the casing is provided with a fixed arm 4:9 that is connected by a link with a lever 51 that is accessible from the seat 52 upon which the operator sits.

When the device is in use liquid, as oil, may be pumped into either end of the cylinder to move the piston in either direction. When the piston is in the position shown in Fig. 5 and itis desired'to exert a pull on the piston rod .27 the valve member 46 is turned so that the passageway 47 will connect the pipes 4:0 and 44: and the pas sageway 48 will connect the pipes 42 and 45, thereby permitting liquid to he drawn from the rear end of the cylinder through pipe 42, valve passageway 48 and pipe 15 and to be pumped under a high pressure into the forward end. of the cylinder through pipe 44:, passageway 47, pipe 410, compensatin chamber 3 pipe 38 and passageway 39.

position shown in shown in Fig. 5, the valve member 46 is turned so that communication for the return of liquid from the forward end of the cylinder to the pump is established through the pipes 40 and :45 and communication for the inlet of liquid under pressure from the pump the pipes 44 and 42.

It will be seen that when the piston rod is Fig. 2, it the space therein T and that less oil will be required to move the piston from front cylinder than willbe required to move such piston from rear to front end thereof. This ifi'erence in the volume of oil required for tbhe difierent movements is compensatedrfor T y i vided with a wedge the chamber 37. The forward end of the piston rod is pro- 5t that may be used for splitting stumps and with a cable gripping the cylinder 25 and 'driven from the shaft 66 passes over a sprocket wheel 56 device that may be removably secured to the wedge and is adapted to grip a cable when the device is used for pulling.

The pump may be of any standard make that is adapted to secure a high pressure in such pump may be 16 by a chain 55 that 47 and 48 by which di erent' 7hen the piston is to be moved from the Fig. .2 to the position to rear end of the 'end of said cylinder and on a shaft 57 the shaft 57 being geared to the crank shaft 58 of the pump by a pinion, not shown,

that meshes with a gearwheel 60 on the crank shaft 58. The sprocket Wheel on the shaft 16 over which the chain that drives the pump passes may be arranged in the same manner and provided with a clutch of the form shown in Fig. 6 so that it may be disconnected.

The tension bars n 33 are of great importance since they serve to relieve the bolts that hold the heads 29 and 30 of agreat amount of strain and serve as devices by which the cyllnder may be directly anchored to a fixed support when the machine is in .use, thereby eliminating the strain on the frame. p

If the device is used for pulling the same may be anchored by cables or chains that are secured to the hooks 35 and consequently'the enormous pressureof the liquid between the head 29 and the piston 26 will be sustained by the tensionbars by reason of the rings 36 engaging with the outer side of the head.

- The tendency of the liquid to blow out the head will hereby be eliminated.

If the device is used for exerting a forward pressure, as forsplitting stumps, the anchor cables will be fastened to the rings 36 and the rear head will be sustained in a similar manner by the engagement of the hooks 35 therewith.

lit is obvious that changes inthe precise form and arrangement of the various parts of this device may be resorted to within the scope of the following claims.

'What I claim, and desire to protect by Letters Patent, is:

l. A stump puller comprising a hydraulic cylinder having a head in each end and tension bars extending lengthwise of said cylinder and adapted to engage .each of said heads said tension bars being adapted for the reception of anchor lines whereby internal pressure against either of said heads will be balanced by the tension of said bars.

2-. A stump puller comprising a hydraulic cylinder having a head in each end thereof each of said heads having slotted extensions on each side thereof, tension bars extending through said slots, the ends of said tension bars adapted to be connected with anchor lines and means on the ends of said tension lengthwise of said cylinder and passing 1 bars for engaging with the outer sides of said heads.

3. A stump pullercomprising a frame mounted on tractor wheels, a hydraulic cylinderdisposed'on said frame and carried thereby, a head in each end of said cylinder,

piston and means for introducing fluid under pressure to said cylinder.

4. A stump puller comprising a hydraulic I cylinder having a head in each end thereof,

,tension bars extending lengthwise of said cylinder and adapted to be connected with anchor lines, means on said tension bars for engaging said heads, a piston in said cylinder, a piston rod on said piston, a pump, conduit means connecting said pump with each end of said cylinder, a four way valve 7 rod-on said piston and projecting out of one end of said cylinder, a compensating chamber connected with one end of said cylinder, a four way valve connected with said compensating chamber, a conduit connecting said valve with the other end of said cylinder, a pump, conduit means connecting said pump and said valve whereby liquid may be selectively pumped from one end of said cylinder to the opposite end thereof.

Signed by me at Portland, Oregon, this 27 day of December, 1917.

FRANK L. KENNEY. Witnesses:

A. W. Davis, S. W. ROGERS. 

